Customer Review: Not great
I bought and used this plotter over the summer of 2008 in Maine. While better than nothing the screen is really too small to be useful. If you zoom out to get a range of a few miles, you lose chart detail. The screen keys on the cursor, and it can then be difficult to find the arrow indicating the boat position again. I would have returned it, but Amazon has only a 30 day return policy on unused items. So you buy it and try it, you own it. Unless you have a very small craft, buy a plotter with a larger screen.
Customer Review: Garmin GPSMAP 478
Fantastic. Easy to use both on and off the water. The auto-zoom is wonderful when driving. Worth every penny.
GPS or Global Positioning Systems are a breakthrough in technology. Earlier, people used to spend great deal of their times in searching a place or choosing the right path to the desired location. Now, with the help of technology, they can have a guide in their hands, which will help them to reach the exact location. Global Positioning System is a miniaturised version of Global Navigation Satellite System. The GPS uses a great deal of technology to make they owner reach the place for he is looking for comfortably. It’s officially known as NAVSTAR GPS. The GPS satellite constellation is managed and carried over by US Air Force.
The GPS works out by carefully timing the signals received through constellations of GPS satellites which are placed high above the earth.
GPS devices are composed of antennas tuned to the frequencies transmitted by these satellites. It also has a time calculator and receiver processors which perform the work of decoding.
One most extensively used GPS device is SATNAV GPS Navigations System which is Satellite Navigation System. These can be mainly found in the latest mobile devices. These are more of handy and follow the same criteria of working. SAT NAV GPS Navigations have an extensive networks and it helps the user to trace the paths if ever he gets lost. These devices ensure that the user never gets lost. No matter, where he is, he can use this device to find the correct location of any place. The accuracy level of these devices is commendable.
Moreover, these devices come in a user friendly cost. He can avail these devices with great ease and comfort. These devices greatly help the user to trace directions and locate places. They indeed prove to be a great source of help to the user especially when he has lost the path. The stylish bodies and user friendly interface helps the user to easily reach the desired place with great convenience.
GPS Navigation: a Smart Way to Search the Way
Finding The Way With GPS Navigation
While the features overall are pretty neat and this is a nice, compact design that is perfect for a night stand, I am finding that for a bedroom alarm clock it doesn't work so well. I thought that the "HiGlo(tm)" back-lighting was always on, making it easy enough to read in the dark, but that is not the case. The back lighting only comes on after fumbling to find one of the "touch technology" buttons that, of course, are also not lit up. For a desk clock, this would be perfect. For a bedside clock, find one that is visible in the dark...
For any of us who have been lost while driving, the road map has been our guiding light, identifying roadways and landmarks to help us find our way. But gone are the days of tri-folded paper maps that require the use of illumination and attention taken from the road. The modern Global Positioning System - or GPS - has transformed the process by which we find our way. But, contrary to popular belief, GPS navigation is not a new invention designed for strictly consumer use.
The Global Positioning System marked its beginnings in the 1970s but seeds of its existence were sown prior to that. We first saw the possibilities of satellite navigation with the launching of Sputnik in 1957. Russian scientists who were monitoring the progress of Sputnik found that they could track its movement based on radio waves; this set the foundation for GPS. The U.S. Navy used an elementary form of GPS in the 1960s when they used six satellites to help their submarines pinpoint their location. But GPS as we know it was designed and implemented by the U.S. Department of Defense in 1978 when they launched the first operational satellite.
Today, 24 satellites circle the earth and provide an enormous amount of information in terms of plotting location. A derivative of this technology in modern times has been GPS navigation - a system that allows drivers to map their routes. GPS navigation comes in a portable unit that can be removed and transferred from vehicle to vehicle when needed. But because of the growing popularity associated with this system, GPS navigation units are now mounted as standard equipment in newer cars. Of course, GPS navigation is also essential to water navigation as used by boats and ships.
But GPS navigation is not solely for the use of vehicles. Outdoor enthusiasts - with an eye towards safety - will often carry a hand-held GPS navigation device; the modern equivalent of a compass.
GPS navigation has allowed us to explore new terrain as we venture forth with confidence, knowing that, no matter what, we will find our way.